CN will give the tone you got on color paper without filtration. B+W Select, the sister film to T 400 CN, is designed to the printed in a mini-lab's gold channel. If you are going to go the mini-lab, machine print route, then B+W select is a better choice.(posted 8655 days ago)There is plenty on the difference between these two films in the photo.net Q&A, if you are willing to do a serach to turn up the results.